Incident Score: Analysis & Impact (UBI1766901285)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Ubisoft's Breach and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Ubisoft Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Ubisoft breach identified under incident ID UBI1766901285.
The analysis begins with a detailed overview of Ubisoft's information like the linkedin page: https://www.linkedin.com/company/ubisoft, the number of followers: 1486883, the industry type: Computer Games and the number of employees: 21990 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 601 and after the incident was 463 with a difference of -138 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on Ubisoft and their customers.
On 21 October 2023, Ubisoft disclosed In-game abuse, Unauthorized access and Potential data breach issues under the banner "Ubisoft Rainbow Six Siege In-Game Abuse and Potential Larger Breach".
Ubisoft's Rainbow Six Siege (R6) suffered a breach that allowed hackers to abuse internal systems to ban and unban players, manipulate in-game moderation feeds, and grant massive amounts of in-game currency and cosmetic items to accounts worldwide.
The disruption is felt across the environment, affecting Rainbow Six Siege game servers, In-game Marketplace and Internal moderation systems, and exposing Potential internal source code and user data (unverified), plus an estimated financial loss of $13.33 million (estimated value of distributed in-game currency).
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Shutdown of Rainbow Six Siege and Marketplace and Disabling ban ticker, and began remediation that includes Rolling back transactions made since 11:00 AM UTC, while recovery efforts such as Working toward full restoration continue, and stakeholders are being briefed through Updates via official X (Twitter) account.
The case underscores how Ongoing, with advisories going out to stakeholders covering Ubisoft has not released a formal statement regarding the incident.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with moderate to high confidence (70%), with evidence including potential MongoDB vulnerability (CVE-2025-14847), and exploitation of internal systems and External Remote Services (T1133) with moderate confidence (60%), supported by evidence indicating exploitation of Rainbow Six Siege service (unverified). Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with moderate to high confidence (70%), supported by evidence indicating mongoBleed vulnerability (CVE-2025-14847) to pivot into internal systems. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (80%), with evidence including banning and unbanning players at will, and displaying fake ban messages. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (30%), supported by evidence indicating unverified claims of extortion attempts, Service Stop (T1489) with high confidence (90%), supported by evidence indicating game and Marketplace temporarily shut down for investigation, and Account Access Removal (T1531) with moderate to high confidence (80%), supported by evidence indicating banning and unbanning players at will. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (50%), supported by evidence indicating potential pivot into internal Git repositories (unverified). Under the Exfiltration tactic, the analysis identified Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating unverified claims of source code and user data theft and Exfiltration Over C2 Channel (T1041) with moderate confidence (50%), supported by evidence indicating unverified claims of data exfiltration for extortion. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Ubisoft Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/ubisoft/incident/UBI1766901285
- Ubisoft CyberSecurity Rating page: https://www.rankiteo.com/company/ubisoft
- Ubisoft Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ubi1766901285-breach-december-2025/
- Ubisoft CyberSecurity Score History: https://www.rankiteo.com/company/ubisoft/history
- Ubisoft CyberSecurity Incident Source: https://www.bleepingcomputer.com/news/security/massive-rainbow-six-siege-breach-gives-players-billions-of-credits/
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf